Ferrari has been caught testing some new ducting at the front of the FF, and another one was recently filmed testing driving around the Fiorano track. It seems the Prancing Horse definitely has something in store for the shooting brake, possibly a turbocharged engine.

Spy shots confirm that BMW is at least testing an all-wheel drive version of the M5, confirming previous rumors. The model likely wouldn't debut until the more powerful, next-gen model debuts and possibly only as an option.

Check out these early shots of the next-gen GMC Acadia doing some winter testing. The massive amount of camouflage makes picking out precise design details difficult, but the crossover reportedly rides the new Chi scaleable platform from General Motors.

Honda plans to release the next-gen Civic Type R some time in 2015, but until then the automaker continues to test it. The latest battery of evaluations is cold weather testing in Sweden. That meant the future hot hatch got to put on some camo and went to play in the snow. Our spies caught it at work, though.

The latest spy shots of the more hardcore version of the Porsche Cayman show it with basically no camouflage. Rumored to be called the GT4, the sports coupe is purported to be the little brother to the 911 GT3 in Porsche's lineup.

Following the niche-oriented iQ and FR-S, Scion is preparing its first new model with mass-market appeal in quite some time with the iM. Just unveiled at the recent Los Angeles Auto Show in concept form, our spies recently shot some photos of a slightly camouflaged production iM doing some testing in Southern California.

The folks at Mercedes-Benz are hard at work on a new generation of the E-Class, following big updates to the S-Class and C-Class in recent years. After seeing latest model in development wearing mostly C-Class body panels, we're getting our first real look at the styling of the sedan during European testing. Unfortunately, it's very well camouflaged from stem to stern, and the obfuscation makes picking out the new details rather difficult. There are a few tweaks to spot, though.

With the XE now out in the open, Jaguar can begin to focus on what comes next. That means a new crossover, but also replacements for some of its aging current models – chief among them, the XF. Introduced back in 2007, Jaguar's mid-range sedan is growing a little long in the tooth. But from these latest spy shots, we can see that the British automaker is hard at work developing its successor.

We've already seen photos of the facelifted Porsche Boxster out testing, but we're now seeing these same changes making their way onto the hardtop Cayman coupe. Cosmetically, the next round of Porsche's smallest sports cars isn't vastly different, with redesigned headlamps, LED running lights (like its big brother, the 911), and new taillamps that actually aren't visible on the prototype seen here.

As development moves forward, the next-generation Mercedes-Benz GLK-Class continues to drop its camouflage. Despite seeing it testing three times now, these are the best shots yet with the least amount obfuscation to give a better idea of its front and rear styling.

The Ford C-Max hatchback looks to be getting a few cosmetic updates, as evidenced in this latest set of spy photos. Like the smaller Focus, which also received a nip/tuck for the 2015 model year, the C-Max appears to be getting a revised front fascia with slimmer headlamps and a more, shall we say, Aston Martin-like grille. Around back, there looks to be a new bumper with redesigned taillamps, as well.